Latest / Style Points / Obstetric Cardiac Anesthesia with Andye Girnius
Transcript
- 0:00Hello anesthesia enthusiasts and welcome to another episode of Style Points. We'll start
- 0:14off with another RSI which of course stands for resident selected information. Today I'm
- 0:19here with Chris DiPietro, CA2 and incoming chief resident. Chris, what RSI do you have
- 0:24for us today?
- 0:27Today we'll be talking about neuroleptic malignant syndrome and serotonin syndrome.
- 0:32It's the dreaded one in a hundred thousand scenario. You induce a patient for general
- 0:36anesthesia using succinylcholine and propofol. Despite increasing your minute ventilation
- 0:41aggressively the untitled CO2 increases to 60 over the next 30 minutes and your patient
- 0:47becomes increasingly tachycardic. After placing the patient in the optimal position for surgery,
- 0:53you plug in the temperature probe to find the patient's temperature is 40.1 degrees
- 0:58Celsius. You call for help and initiate treatment for MH. On the surface malignant hyperthermia
- 1:04may be the obvious problem here but should the differential diagnosis stop there? Today
- 1:10we're going to discuss the similarly presenting but less commonly thought of neuroleptic malignant
- 1:16syndrome and serotonin syndrome. Neuroleptic malignant syndrome or NMS is a disease of
- 1:22dopamine antagonism or depleted dopamine. Proposed mechanisms include disruption of
- 1:27the nigrostriatal pathways in the CNS, mitochondrial disruption in skeletal muscle and dysregulation
- 1:34of other neurotransmitters and catecholamines like GABA, serotonin, acetylcholine, and epinephrine.
- 1:42The number one causes the use of first generation highly potent dopamine antagonists aka neuroleptics
- 1:48such as haloperidol, a medication that can be used in the perioperative setting for agitation
- 1:53and postoperative nausea and vomiting. However, commonly used anti-medics such as metoclopramide,
- 2:00promethazine, and droperidol also work by using dopamine antagonism and can serve as
- 2:05possible causes for NMS. Risk for developing NMS has been linked to higher doses of these
- 2:11medications not necessarily the length of exposure. Other risk factors include surgical
- 2:16stress, infection, dehydration, and existing use of lithium.
- 2:22A commonly missed cause for NMS, which at its core is the state of a lack of dopamine,
- 2:29are patients who are in withdrawal from a dopamine agonist such as a patient who receives
- 2:33treatment for Parkinson's disease. NMS is a clinical diagnosis. Within 24 to 72 hours
- 2:40of the use of the inciting factor, the onset of NMS usually follows a pattern of symptoms,
- 2:46the first being mental status change such as agitation followed by possible stupor and
- 2:51coma. This is often followed by so-called lead hyperagidity, hyperthermia, and autonomic
- 2:58instability. Imagine now you have a patient under general anesthesia with these symptoms.
- 3:04You do not have the ability to perform a mental status assessment so you are left with a patient
- 3:09who has rigidity, hyperthermia, and autonomic instability. Sure sounds like something else,
- 3:15right? The first step in treatment of NMS is removing
- 3:18the offending agent. Discontinue all dopamine antagonists or replete with dopamine agonists
- 3:25as needed. There are no evidence-based treatment strategies for NMS. Treatment such as diazepam
- 3:32and dantrolene for skeletal muscle relaxation, and bromocryptine, amantadine, and levodopa
- 3:38for dopamine repletion have only been successful in case reports. Further management is supportive.
- 3:45Ensure a patent airway. Follow ACLS guidelines as needed for arrhythmias. Obtain adequate
- 3:50IV access and consider invasive monitoring for hemodynamic trends and treat as needed.
- 3:56Externally cool the patient. Labs should be sent to address abnormalities in electrolytes
- 4:02and acid base status, myocardial damage, blood counts, kidney and liver function, and muscle
- 4:08breakdown in the form of creatine kinase. If under general anesthesia, prompt discussion
- 4:14with the surgery team about aborting the procedures should be had. Discontinuation of volatile
- 4:19anesthetics and a switch to a total intravenous anesthesia should be considered. In the off
- 4:25chance this is indeed malignant hyperthermia. Now serotonin syndrome, unlike NMS, is a syndrome
- 4:32of excess. Specifically excess serotonin causing an excitatory state in the central nervous
- 4:38system leading to both central and peripheral manifestations. Causes include overdose, inadvertent
- 4:45drug interactions with two or more serotonin modulating agents, or even from higher doses
- 4:50with a single agent. Classically, the cause of serotonin syndrome was excess serotonin
- 4:56caused by monoamine oxidase inhibitor use when combined with an additional serotonin
- 5:02agent such as SSRIs. While MAOIs such as selagelene and resagelin in the treatment of depression
- 5:09have fallen out of favor, some drugs with MAOI properties remain clinically relevant.
- 5:16While used for completely different reasons, linozolate is still a commonly used antibiotic
- 5:20for multi-drug resistant organisms, and methylene blue is used for vasoplegia and hemoglobinemia.
- 5:28More commonly used medications like fentanyl, moperidine, tramadol, odancetron, cyclobenzeprene,
- 5:34and neuropathic agents like duloxetine and amitriptyline also modulate serotonin. St.
- 5:39John's wort is an over-the-counter herbal supplement known for mood boosting properties
- 5:44that also increases serotonin levels. Even illicit drugs such as prescribed stimulants
- 5:50such as cocaine, amphetamines, and ecstasy are also common culprits. Like NMS, serotonin
- 5:56syndrome is diagnosed clinically. Symptoms often arise within 24 hours following a change
- 6:02to or the addition of a serotonin modulating drug. Symptoms commonly include agitation,
- 6:09dipheresis, tachycardia, hyperthermia, tremor, hyperreflexia, and even sometimes rigidity.
- 6:17The hunter criteria is a tool to aid in diagnosis. The hallmark of serotonin syndrome is clonus,
- 6:23either spontaneous or induced. Again, imagine you have a patient under general anesthesia
- 6:29with these symptoms, but you're unable to assess for clonus because you utilized a neuromuscular
- 6:34blocker. Does this clinical picture sound familiar? Treatment involves prompt discontinuation
- 6:42of all serotonin agents. Cases with mild agitation can often be addressed with benzodiazepines.
- 6:50Moderate to severe cases may require aggressive sedation, ultimately endotracheal intubation,
- 6:56and the treatment of hemodynamic instability. Cyproheptadine, a serotonin and histamine
- 7:03antagonist, is typically reserved for patients for which benzos and initial supportive care
- 7:07efforts fail. The remainder of treatment is largely the same as already discussed with
- 7:12NMS. So the bad news is these disease present similarly, especially under general anesthesia.
- 7:19The good news is these diseases remain extremely rare, but they almost always occur in an unpredictable
- 7:26fashion. That is why as perioperative providers, it is imperative that we take a deep dive
- 7:32into our patients' recent medication use before they undergo anesthesia. If your patient
- 7:37with Parkinson's received three doses of high dose haloperidol for agitation the day
- 7:42prior and has not received their dopamine agonist for several days, take note of this.
- 7:48If your patient undergoing a CABG is on two serotonin agents for depression and methylene
- 7:53blue is used on cardiopulmonary bypass for vasoplegia, again, take note of this. As always,
- 8:00use your best clinical judgment, but don't be afraid to ask for help from a colleague.
- 8:04Chris, thank you so much. Joining us today is Dr. Andi Gernius. Andi is the division
- 8:11director of obstetric anesthesia and the fellowship director for obstetric anesthesia fellowship
- 8:16here at the University of Cincinnati. She completed dual fellowships in both obstetric
- 8:20and cardiac anesthesia and continues to practice in both domains. She also has a lot of cool
- 8:25tattoos and a fearless attitude. Andi, thanks for joining us.
- 8:29Thanks for having me. Andi, to start, I'm going to ask you one of
- 8:32the standard get to know you questions. If you could invite anyone in the world over
- 8:36for dinner, including somebody from the past or even from fiction, who would you invite
- 8:40and why? I always struggle with this question. I think
- 8:44because deep down I'm afraid that I'm really boring and I wouldn't be able to talk to any
- 8:47of these people. That's fair.
- 8:50But I think that the person that I would love to talk to most is Adam Grant. You are familiar
- 8:56with him. But for those who aren't, he is an organizational psychologist at Wharton
- 9:01at the University of Pennsylvania. And he does a lot of work on change psychology, leadership
- 9:07psychology. And I find his ideas really interesting and very applicable to what we do in healthcare.
- 9:14So what would you want to ask him about? What would you serve an organizational psychologist
- 9:20for dinner? Well, God, that's a great question.
- 9:26I'm always afraid people are judging. But no, I just I would just love to have a conversation
- 9:34and see where it goes and just how he comes up with the ideas he comes up with and where
- 9:40he finds all of his stuff. And honestly, he seems like just a pretty cool guy.
- 9:45That sounds great. Thanks for sharing. The next thing I'd like to ask you about, could
- 9:50you talk a little bit more about your background? How did you come to specialize in obstetric
- 9:55cardiac anesthesia? Yeah, it's not it's not the most obvious
- 9:58combination, is it? But it was kind of an accident. Actually, during residency, I was
- 10:03very much on a cardiac track. I wanted to do the cardiac fellowship. I loved cardiac.
- 10:10It was the thing for me, you know, I liked OB, but I didn't really see it as like a fellowship
- 10:15type career. It was just something that I did in residency and learned about. And about
- 10:19two months before the end of my residency, we had a patient admitted who had basically
- 10:27a tamponade physiology. And she was also about 34 weeks pregnant with twins. Wow. And and
- 10:34at the time, an unspecified number of years ago, cardiac obstetric anesthesia was just
- 10:40not really a thing, right? Cardiac and OB didn't really go together. The cardiologists
- 10:45were all freaked out that she was pregnant. Like they wanted to be very hands off. They
- 10:48didn't want to do anything. The obstetricians were very freaked out by this heart condition
- 10:52that they really had no idea what to do with. And I happened to be the resident on when
- 10:58she was admitted and saw her multiple times, did her anesthesia for her delivery. So I
- 11:04kind of got to follow her more than we do for most people. And what I realized from
- 11:08this is that we actually know about both of those things, right? We learn about a broad
- 11:15set of specialties in our residency. So we know about OB and we know about cardiac. And
- 11:20we could probably get to the point where we could combine them and figure out what to
- 11:23do in a way that the other people seem to be struggling with a lot more because it had
- 11:28been a lot longer since they had had to really deal with any of this information. And so
- 11:32that's when it started to occur to me that there could be a role for us in the care of
- 11:36these patients and really connecting these things and managing them through delivery.
- 11:40It seems like you really got to serve as the connective piece in that situation and you
- 11:45decided to make a whole career out of it. Yeah, it really was kind of a light bulb in
- 11:49my head. It stuck with me a lot. I ended up presenting that patient to our entire department.
- 11:55I still remember. I remember it really clearly. It's one of those things that just sticks
- 12:01with you and you could just remember it clearly like it happened yesterday. And it really
- 12:06changed the course of what I decided to do with my life and career. A lot of people think,
- 12:12oh no, a pregnant patient, that's a little scary. Or they also think that about the pregnant
- 12:19patient with cardiac disease. Oh no, that's a little scary. But you take both of those
- 12:25head on. So what are some of the biggest challenges that you face in managing these pregnant patients
- 12:30with cardiac conditions during labor and delivery? Well, the first thing is that all the things
- 12:34you said about being scared of those patients, I still am too. Even though I've done them
- 12:39a lot and I'm more comfortable than a lot of people, when we're delivering the really
- 12:42sick ones, I am still scared because there's only so much you can do. So I don't know if
- 12:49that helps other people to know that. But no, it's really interesting. The more I've
- 12:54done this, some of the challenges in the beginning were more figuring out what the right thing
- 12:58to do was, what the right anesthetic was, how to keep them stable, what the right meds
- 13:02were to use. And I've really gotten more comfortable with that part of it. And a couple of the
- 13:07things that have really come out more recently are deciding how much extra a person needs.
- 13:14You have your basic labor and delivery, your basic monitors, your basic things. And that's
- 13:17a normal childbirth experience. Because you have to remember that in the end, these women
- 13:22are having babies and people tend to see that as a life experience a little bit less than
- 13:26a medical intervention. And some of these people with heart disease need more medical
- 13:32intervention. They need more care. They need ICU admission. They need different things.
- 13:37But that has implications for their childbirth if they can see the baby afterwards. From
- 13:42the ICU, they can't see their baby afterwards. So that is a huge thing for a lot of people.
- 13:48Do they need invasive monitors, which dictates where they can deliver in your system. And
- 13:53so they're the people who are very low risk that can have the quote unquote normal experience.
- 13:58They're the people who are very high risk, where it's kind of a no brainer to do all
- 14:02the things. But some of the people in the middle, it's a little tricky to decide how
- 14:06much they need, how much to completely change the experience, how much to take them outside
- 14:11of our normal routine. Because I think we also forget that there is some risk to people
- 14:18in altering our normal routine. If you take a delivery patient outside of labor and delivery,
- 14:23everyone gets a little freaked out about that. You're further away from your typical equipment,
- 14:27your typical meds, the people who know how to deal with that part of things. And so that's
- 14:31not benign either. And so that's a little bit of a tricky thing, right? We've had some
- 14:35recent patients that I think we've either probably over treated or we kind of took a
- 14:40risk on and pushed people's comfort level a little bit. And that's been a tricky thing
- 14:45to figure out.
- 14:46So it sounds like we really need to decide which category of risk these patients fit
- 14:52into. So when we're doing that preoperative assessment of the pregnant patient with a
- 14:56cardiac condition, when does that start and what are you looking for?
- 15:00Yeah. Well, when we evaluate people, we try to do it all as a group, right? So we have
- 15:06a multidisciplinary clinic with cardiologists, maternal fetal medicine doctors, and anesthesiologists.
- 15:12And one of the big ways that we risk stratify people is by using one of the risk assessment
- 15:18scores. It turns out there are actually several for pregnant women with heart disease. And
- 15:21the one that we tend to use most commonly is the World Health Organization. It's a numerical
- 15:26score from there are five total categories. They go from one to four, and it's based on
- 15:31their underlying cardiac lesion and how well or poorly that lesion would be expected to
- 15:35tolerate pregnancy. And that really just gives you their overall risk for all of the pregnancy
- 15:39and peripartum period. It doesn't really nail down kind of what you need to do in the hospital.
- 15:44And so if we're trying to figure out kind of what we think is going to happen around
- 15:47delivery, right, we look at how they've done during pregnancy, how their hearts tolerated
- 15:53pregnancy, their serial echoes, what's happened with that, what their volume status looks
- 15:57like. Basically, what I want to know is how well is their heart going to tolerate the
- 16:01stress of either labor or a C-section and that auto transfusion that comes with delivery
- 16:06because that's a big volume bolus for some hearts that may not be able to handle it.
- 16:09So those are kind of the questions that I'm thinking about in my head. And I'm trying
- 16:13to think about how much room they have in their vasculature, right? If they're over
- 16:16a liter already or if they can tolerate that. And that really dictates kind of which direction
- 16:23I might go with my anesthetic and how we might approach their care after delivery.
- 16:28So how often are you meeting with these patients? How does that multidisciplinary clinic work?
- 16:33So we have the clinic once a month. And some patients are coming every single month. If
- 16:39we think they're very high risk, we want to keep a very close eye on them. And in between
- 16:42those appointments, they can also go to the high risk OB clinic, which is once a week.
- 16:48So the MFMs are seeing them a lot. There are some people who come to the clinic once and
- 16:54we say, things look pretty good. We think you're fine. And some people even come from
- 16:59other hospitals. They come from our community hospital, Westchester, and we say, you're
- 17:03so low risk, you can deliver there. You don't need to be here. These are our recommendations
- 17:07in general. And then you can go forth and give birth wherever you want. And some people
- 17:11kind of come once every three months or once every trimester, or we see them once and then
- 17:15we get like a third trimester echo and they follow up. So it really depends on what we
- 17:19think their overall risk is.
- 17:21Makes sense. So let's say that somebody comes in to the hospital and they haven't gotten
- 17:27any care beforehand. This is probably a situation that you've never seen before. What's going
- 17:35to be your approach towards the general history and physical of this patient? How are you
- 17:40going to optimize them in the brief time period that we have before they deliver?
- 17:46Yeah. So I think that the most common scenario for this is somebody with peripartum cardiomyopathy.
- 17:52This is somebody who doesn't actually have any heart history and they develop heart failure
- 17:56during their pregnancy, kind of near the end. And so you could approach it kind of the same
- 18:00way you would approach any heart failure patient, right? You figure out their symptoms, you
- 18:04figure out their volume status, you know, you assess their fetal status and, and figure
- 18:08out if there's anything urgent that needs to happen there because of the fetal status
- 18:11is not reassuring, then that changes your timeline a lot. And that's one of the big
- 18:15determinants of things. So you, you know, you get your history, your physical, your
- 18:19timeline of symptoms and, and usually they're going to get an echo. And so you really want
- 18:24to know what that looks like. And, and you have team meetings. You get together with
- 18:29everyone who's taking care of them and you all talk through what the timeline is from
- 18:33a fetal perspective, from a maternal perspective. And how can you balance, you know, the need
- 18:39to optimize mom and the need to deliver a baby that may or may not be doing well, depending
- 18:44on how mom is doing.
- 18:46A lot of the medications that we would typically use on a cardiac patient might not be so good
- 18:52for a fetus. So how do you navigate that space when you're talking about the risk to mom
- 18:59versus the risk to baby?
- 19:01I mean, I think that our overall guiding principle is that a stable mom equals a stable baby.
- 19:08And so there are certain medications that we all kind of know to avoid, right? The ones
- 19:13that are bad in pregnancy, the statins, the coumadins, you know, a tunnel all which randomly
- 19:18among beta blockers is terrible for babies, apparently. And so we make sure we're avoiding
- 19:22those things. And all the other things are really okay for use in pregnancy with certain
- 19:28caveats, right? So for example, Lasix, right? When you have a heart failure patient, you
- 19:32would need to diaries. That's okay in pregnancy. It has some risks to the baby, right? It can
- 19:39lower their fluid. It can cause, you know, certain other things. And so they just get
- 19:42monitored more frequently to make sure that their fluid levels are doing okay. But we
- 19:46actually give it quite commonly when it's needed for our heart patients. Same thing
- 19:50with other beta blockers like metoprolol and lobatolol and things like that. We actually
- 19:54use those pretty commonly because we think that optimizing mom and making her the best
- 20:00she can be is what's going to help baby the most anyway. And those drugs with monitoring
- 20:05are actually pretty safe.
- 20:08The other day, I remember you staying late just so you could deliver one of your favorite
- 20:14lectures on what to do with a variety of lesions in the pregnant patient. And I wonder if you
- 20:22could talk a little bit about that, since I know it's one of your favorite topics. What
- 20:28should we how should we think about the different cardiac lesions and how they apply to a pregnant
- 20:34patient and you don't have to give the entire one hour lecture?
- 20:37Well, I can do it in less than an hour. Okay, I've had to do it in 15 minutes before it's
- 20:42not quite as good without my without my diagram. Sure. But basically, my philosophy is that
- 20:50there are all these fancy risk scores that will tell you who's going to do badly during
- 20:54pregnancy, who's going to struggle. But I believe that if you look at the physiology
- 20:57of the certain lesions, you can predict that on your own anyway without these risk scores.
- 21:01And the risk scores actually do bear a lot of that out. And so as a resident, I remember
- 21:09being in the OR and getting a table that on one side had all the valvular lesions, you
- 21:14know, aortic stenosis, mitral stenosis, the regurginant lesions, Hocum, and on the other
- 21:19on the top of the table was loading conditions for the heart. And what the optimal loading
- 21:24conditions were for that lesion. So preload, afterload, heart rate, contractility, and
- 21:29you had to say what you thought was best for each one of those things for each cardiac
- 21:34lesion. Those are your anesthetic management goals, right? Those are your hemodynamic goals
- 21:38in the OR for that lesion to maximize cardiac output.
- 21:42Okay, so get out your pencils, paper, everybody go ahead and draw that out before you listen
- 21:47to the next part of the podcast.
- 21:49So I have our residents, we draw it out on the board. And you know, we say, for example,
- 21:56a stenotic lesion, whether it's aortic stenosis or mitral stenosis, right, you want your heart
- 22:00rate to be low to increase your diastolic filling time for a stiff heart, right? You
- 22:06want your preload to be I mean, relatively even, but you don't need it to be like so
- 22:14a volume overload, you need enough left atrial pressure to have forward flow, but you don't
- 22:18need a ton of volume because you have a stiff heart and you don't want it to back up. You
- 22:22want your afterload to actually be maintained to high because you want to maintain coronary
- 22:26perfusion, for example, and your contractility again, you want to maintain it because you're
- 22:30pumping against a stenotic lesion, right? Those are your anesthetic goals. Those are
- 22:35the things that are good for that lesion that are not going to get you into too much trouble,
- 22:39right? For regurgitate lesion, it's kind of the opposite. So if you've heard the fast
- 22:42flow forward mnemonic, right, you want a higher heart rate, you want more volume because I
- 22:48think of regurgitate lesion says there's all this extra volume swirling in the heart. So
- 22:51you need a little more volume in your body to kind of make up for that. So you want your
- 22:55volume to be up. You want your contractility to be maintained, you want your afterload
- 23:00to actually be low so that more blood goes forward than backward. Then, if you add another
- 23:06line to your table called pregnancy, and you fill in the physiologic changes that happen
- 23:12during pregnancy, you can actually compare what happens during pregnancy to what's best
- 23:17for each lesion, right? So pregnancy, right, your heart rate goes up, your preload goes
- 23:22up by a good amount, your afterload goes down, and your contractility is maintained. Your
- 23:27heart does die a little bit, but your contractility is maintained. So if you look at your chart
- 23:31and you have all those things filled out, what you'll see is that the stenotic lesions
- 23:35are basically the opposite in every category, whereas the regurgitate lesions all line up
- 23:39pretty well. The things that are good for regurgitate lesions are the things that are
- 23:42happening to pregnant patients. And sure enough, they tend to do better during pregnancy.
- 23:47So if you are looking through a patient's echo and you see stenotic lesions, that's
- 23:52going to cause more of a cortisol surge for you. Absolutely. Than if you saw a regurgitate
- 23:57lesion. That's good to know. Okay. So what kind of monitoring techniques do you use for
- 24:04these patients when they're on labor and delivery or when they get into the operating room?
- 24:11What do you think is the most helpful? So the first thing that you have to know is what
- 24:16monitors your labor and delivery can support. So for example, on our labor and delivery,
- 24:22we can't have an arterial line in a laboring patient because the nurses on L&D, while they're
- 24:27very good at many things, are not really trained and experienced to manage arterial lines.
- 24:31They don't know how to do it. They don't know how to use the tubing. That is not our lane
- 24:37and we do not want anything to do with it. And so we can't have that. If we think that
- 24:41a patient needs that level of monitoring, they have to labor in the ICU. And we have
- 24:46had patients labor in the ICU. They do not love it.
- 24:50I have dealt with one or two of those on call myself.
- 24:53Nobody really loves it, which is another challenge, right? Coordinating a delivery like that in
- 25:00a patient who's in a very unfamiliar location.
- 25:02Yeah, absolutely. So how do you approach monitoring a patient that is so far away? What are your
- 25:11goals there?
- 25:12Yeah. One of the things that we are lucky to have is a cardiac ICU in which we have
- 25:17an anesthesia critical care team who has somebody there 24-7. And so over time, the agreement
- 25:23we've come to is that those laboring patients who are in the ICU, right, our anesthesia
- 25:26critical care team is kind of the primary ICU team for that person. They're the ones
- 25:31who are monitoring the hemodynamics so that our labor and delivery anesthesia team who
- 25:34is three floors away doesn't have to dedicate someone to be up there all the time. So we
- 25:39are monitoring the labor of a girl, which is checks every several hours. And the critical
- 25:45care team can call us if they have any questions or concerns, but we have them kind of as partners
- 25:49who help us with the management of that.
- 25:52A lot of these pregnant patients with heart conditions are anticoagulated. How do you
- 25:58approach the idea of sticking a big needle in their back to do an epidural when they
- 26:04might need anticoagulation to prevent them from getting some horrific blood clot?
- 26:09Yeah. That is always a tricky scenario. Thankfully, most of the patients who are pregnant are
- 26:16on lobenox. Lobenox is pretty standard for pregnant patients and ASRA has pretty clear
- 26:20guidelines about stopping lobenox before noreaxial techniques. And so, you know, we're usually
- 26:28able to plan their inductions in a way that allows us to do noreaxial just like we would
- 26:33anyone else who's on anticoagulation during pregnancy. That's not so much different. In
- 26:37the rare case that they are on Coumadin, that's a lot trickier. I've had maybe two of those
- 26:41cases in my career. And we had a recent one where the patient was at such high risk for
- 26:46thrombosis that she was bridged on a heparin drip and nobody felt comfortable turning off
- 26:51her heparin drip until just before the surgery. And so she actually had to undergo general
- 26:55anesthesia for her C-section because we were not able to stop her anticoagulation.
- 26:59Wow. But it seems like that's a little bit more of a rare scenario versus most of the
- 27:03time you just follow the ASRA guidelines.
- 27:05Exactly. Most of the time you're dealing with a standard lobenox dosing, standard lobenox
- 27:09guidelines and the OBs want to stop anticoagulation for delivery.
- 27:13That makes sense. So after one of these babies has been delivered, the risk to mom doesn't
- 27:20go away. Can you talk a little bit about what common pitfalls you might see right after
- 27:26delivery for these patients?
- 27:28Yeah. So as you probably have learned at some point, the maximum cardiac output that these
- 27:34patients are going to see is really right after delivery. And for a long time, I thought
- 27:38immediately after delivery meant like the instant the baby was delivered. That's when
- 27:42it was going to happen. And I've learned through time that is not really true. In C-sections,
- 27:48what I've noticed is probably about 10 to 15 minutes after the baby comes out is when
- 27:53I would start to see signs of that volume hitting their heart if I didn't do anything
- 27:56about it. So the patient gets more short of breath, the pulse starts to go down. Like
- 28:01you just, the blood pressure gets a little soft. You just start noticing them wobbling
- 28:04a little bit. And so from, from that point on, that's when you really start to have to
- 28:10worry about a big bolus of fluid hitting the heart all at once. Even if they make it through
- 28:14that, the day or two after delivery is when all the other fluids they've gotten that have
- 28:20seeped into their tissues, all the swelling they've had, that all starts to mobilize and
- 28:23go back into their circulation. And so you can actually get delayed reactions, um, a
- 28:28couple, up to a couple of days later. And so for some of the patients we're really worried
- 28:31about, we'll just keep them on the hospital maybe for an extra day, just to keep an extra
- 28:35close eye on them, to make sure that they've started to kind of mobilize their fluid. You
- 28:39know, you can tell their urine output picks up. They start to feel the swelling go down
- 28:42and know that they're doing okay with it.
- 28:46Many patients come to OB with a birth plan in mind. And a lot of times anesthesia has
- 28:54a lot of specific roles to play or not to play in that birth plan, which as opposed
- 29:00to general anesthesia, people don't usually come to us with an anesthesia plan. So how
- 29:05do you navigate patient preferences when they might not be aligned with the standard of
- 29:12care?
- 29:14So this is tricky and it's, it's interesting to talk about because I'm like anybody else.
- 29:22Some days I try really hard to have this conversation and I do a terrible job at it and people just
- 29:30dig in their heels and it's awful. And some days I do a really great job. I'm like, I
- 29:34did everything right there. But my favorite thing to do, if I can get it right, is to
- 29:42go in and say, look, like you have this whole plan for how you want things to go. And I
- 29:46know that you've thought a lot about it and you've done research and you've read a lot
- 29:50of things and you decided this is the thing that I want. But there are things about this
- 29:55whole experience and about you specifically that you're not going to find in your internet
- 30:00searches. You're not going to find in the books you can read or the books you can find
- 30:02because they live in my head and they live from my experience and taking care of patients
- 30:06like this and doing this over and over. And so as you think about how you want this labor
- 30:11to go and as things progress and change through the day, I want to give you this information
- 30:15that lives in my head that you can take into account. If you start thinking about how you
- 30:21want the state to go and if you want to reassess, change your plan or whatever, I want you to
- 30:24have all that information as well.
- 30:27That makes a lot of sense. It's always nice when you have some go-to lines that you can
- 30:31use for patients, you might have an expectation that's different than the reality.
- 30:35Yeah. And I mean, honestly, I think the best you can do is hear what they want and why
- 30:42they want it and make sure that they know that they're being heard and that we're not
- 30:47just saying like, this is how it has to go and I don't care what you think, but to at
- 30:51least like live with what they want and say, these are the reasons that I want it to be
- 30:55the way that I want it. And that, you know, sometimes we can compromise with what you
- 31:00want and sometimes it really is just a safety thing that we can't compromise on and I will
- 31:04do my best to compromise where I can.
- 31:06Yeah, that makes sense. So, zooming out a little bit, what sort of recent advancements
- 31:13or research finding in obstetric cardiac anesthesia do you find most exciting or promising? What's
- 31:19the new frontier of what we're doing for these people?
- 31:22So a lot of what you will read right now about cardio obstetrics is the concept of the cardio
- 31:26obstetric team. The cardio B team is the big thing people are writing about. And really,
- 31:31it's just the idea of multidisciplinary care and coordination and kind of having a formal
- 31:35team or structure to evaluate and care for these patients and having a team who's experienced
- 31:40in these patients. So it basically functions as a referral center, just like any other,
- 31:45you know, uncommon common uncommon condition, basically, where you go someplace where people
- 31:50have done this before they have a system in place, they know what to do. Even if they
- 31:53don't, they know how to think through the situation together. And so you want to make
- 31:58sure right you have obstetricians, MFMs, cardiologists and anesthesiologists, obstetric or cardiac,
- 32:05because most places don't have both right there are not a lot of people who do both
- 32:08of those things together. And then you want to make sure you have your people identified
- 32:12who are not needed for every case, but you have to maybe call into action sometimes cardiac
- 32:16surgeons, electrophysiologists, critical care, you know, just all the other ancillary services
- 32:23that might have to be involved with these people. And so that's really the big thing
- 32:26is trying to get those formal systems of care to take care of these patients. What I would
- 32:32like to see going forward is, and this is giving me ideas is kind of what I mentioned
- 32:39earlier, right around delivery, who do we need to escalate care for who's going to struggle
- 32:43specifically so much with delivery, because the one drawback with these risk scores is
- 32:48that it doesn't tell you who's going to struggle at that particular time. It just kind of tells
- 32:52you your overall risk of having something happen at any point. And so if we can nail
- 32:56down and we can look back and say who actually did end up struggling with their delivery
- 33:00who did end up having trouble in those first couple postpartum dates? Could we actually
- 33:05have a little more data behind that decision of who needs more monitoring who needs to
- 33:09deliver in a special place? I think that would be really helpful. Yeah, that does sound like
- 33:14an interesting project. Do you want to give that your email address so that people can
- 33:19volunteer to be part of it? I'm always I'm always happy to work with people who are interested
- 33:24in projects. So let's say that somebody has listened to this podcast and they want to
- 33:29be you. They're really excited about obstetric cardiac anesthesia, and they want to get cool
- 33:35tattoos and everything else. What advice would you give them? What would you tell them? How
- 33:40can they structure their career maybe starting from medical school, aiming towards a career
- 33:47in obstetric cardiac anesthesia? Well, I'm not sure you have to structure things quite
- 33:52as early as medical school. So deciding on anesthesia is a good first step. But when
- 33:56I think back to medical school, I remember liking my OB rotation even then. And so what
- 34:02I would say is pay attention to the things that you're enjoying in the subject matters
- 34:05that you're enjoying, because you don't have to do that specialty to be involved in that
- 34:09specialty. And I don't think I realized that back then. The nice thing about anesthesia
- 34:14is that you can be adjacent to a lot of fields and kind of still be involved in without primarily
- 34:18doing that thing. I don't have to be a cardiologist to be involved, right? Like I do cardiac anesthesia.
- 34:24I'm certified in echocardiography. I don't have to be a cardiologist and see patients
- 34:27in clinic. That's great. So if you're interested in anesthesia, the you know, a nice thing
- 34:34in med school is just kind of pay attention to the other things you did enjoy and see
- 34:37if there's a way to incorporate that in your career in anesthesia. There's a lot of flexibility
- 34:41in that way. And if you are specifically interested in cardio OB, see if you have a clinic where
- 34:47you are. See if you can shadow somebody who actually does it. See if you can see a little
- 34:51bit about what the care system looks like where you are. Get an idea of it's something
- 34:55you might be interested in doing. Because I really like what I do. It's such a niche
- 35:00thing that I get a lot of phone calls like I'm a resource for people. And that's really
- 35:05cool. It sometimes can cut into your off hours because not a lot of people have the knowledge
- 35:10that you have. But it's not too bad. And enduring residency, you know, really first focus on
- 35:16being a good anesthesiologist. Focus on learning how to build relationships, working among
- 35:22a team, you know, pay attention to obviously those two rotations that you're going to do
- 35:26well with. But the best thing you can do is be good at your job, your basic job. And then
- 35:34as far as pursuing both fellowships, the good news is at least among the obstetric anesthesia
- 35:42world, there's a lot of interest in doing both of these things. And so there's a lot
- 35:46of support in that way to try to make it happen. People are actually really excited about it,
- 35:50which is funny to me because when I was doing it, everyone thought I was crazy. This is
- 35:54unheard of. People are like, why are you doing this? Doesn't make any sense. And now it's
- 35:58really a thing that people are doing. And so there's an effort to try to like dual
- 36:03match into fellowships. Cardiac is a little more competitive. So that can be the tricky
- 36:08one. I would focus on making your application good for that. Obstetric anesthesia is a wonderful
- 36:15specialty, but not nearly as competitive. If that's helpful. I don't know.
- 36:20That makes a lot of sense. Is there is there an order in which you recommend doing the
- 36:25fellowships? Should you get into cardiac because it's the tougher one to get into first? What
- 36:29do you think? So what I have heard people talk about is the worry from a program director's
- 36:37standpoint is that people are going to try to get into this dual matching thing and get
- 36:42into the OB fellowship as like a backdoor to get into cardiac. And so a lot of places
- 36:46will actually want you to do the obstetric fellowship first interest to make sure you
- 36:50really want to do it and not get in, do the cardiac fellowship and then be like, actually
- 36:54I don't want to do OB anymore. I don't know how much that's actually happened. I think
- 36:58that's just a fear that people have because cardiac is so much more competitive that they
- 37:03don't want to end up getting taken advantage of. So I I'm not sure how much choice you
- 37:07would have in that, to be honest. Okay. So lastly, let's wrap up talking about
- 37:13some style points. What style points or points of personal preference have brought you success
- 37:19in your career, both in and out of the operating room?
- 37:23So for me, this will not surprise you at all. But communication is a big one. And it's something
- 37:30that I've become more formally interested in recently, but realized that I've really
- 37:34done my entire medical career. As an intern, I realized that female physicians and female
- 37:41nurses had a little bit of a different relationship than our male counterparts. And I realized
- 37:47that I was going to need to be a little bit more deliberate about building a relationship
- 37:53with nurses so that when push comes to shove, right, if you're in an emergent situation,
- 38:00emotions are high, tempers are high, you give an order, you're not misinterpreted, right?
- 38:05You like you're a known person to these people. It goes very, very differently than if you
- 38:10just kind of come in, you give orders, you're dismissive or whatever. You don't have any
- 38:15like social capital, or lack of a better word. And so I started doing that then. And, and
- 38:23I've just kind of kept doing it, right? It's nothing crazy. It's nothing sinister. It's
- 38:27literally just stopping for a moment to chat with people asking their opinion, you know,
- 38:31giving where you can give like if they're like, Hey, I think this is a better way. And
- 38:34it doesn't make a difference to you. Great. That sounds good. Especially as an intern,
- 38:39nurses have so much to tell you. They know a lot more about actually taking care of patients
- 38:43than you do when you first start. Absolutely. So anyway, communication, building relationships
- 38:52with people you work with, and honestly, just getting everyone in the same room to talk
- 38:56about stuff. That's the best thing about our cardiac OB clinic is that we spend the first
- 39:01hour all sitting in a room together and going through all the patients and making their
- 39:04plans, which can change when you see them. But we're all just talking to each other in
- 39:09the same room. There's no messages going back and forth in the chart. There's no like phone
- 39:13tag. There's no, okay, well, I talked to this person, I talked to the other person and call
- 39:17you back. Like we're all just talking in a group. That can make a big difference when
- 39:21you bring all the experts into a room. It seems like you could come to a consensus much
- 39:25more quickly. And by reading people's faces, you can probably see which points are more
- 39:31or less important and where we can make compromises. Yeah. And I, um, I bring residents to the
- 39:36clinic, not because I think everyone is going to be interested in cardio OB anesthesia,
- 39:41but because I actually want them to see what that looks like, what that whole conversation
- 39:46with everyone in a room, how constructive it is, how easy it is to come up with a plan
- 39:51that way. And almost universally, despite any skepticism going into it, they find it
- 39:57to be a very positive experience. They think it's cool. They learn a lot. It helps that
- 40:02I don't make them write a lot of notes. But, um, but no, I think that they, they enjoy
- 40:08the experience and seeing what it's like. And, you know, even beyond a formal clinic,
- 40:13when I'm on the OB floor and we have a question about something, I'll just go to the OB residence
- 40:17to the bubble where they do all their work and I'll just sit down and I'll be like,
- 40:21Hey guys, what's up? And we just talk and then I'll just stay and chat with them for
- 40:25a few minutes. And I think that's really helped how I interact and work with them. And in
- 40:30general, other people on that floor. Well, those are very helpful. And I think that can
- 40:36be appreciated no matter what flavor of anesthesia you do. Yeah. I think that's pretty much a
- 40:40universal concept in life that will help you anywhere. Andy, thank you so much for joining
- 40:46us. Thank you for having me. And that's it for this episode of style points. Now I've
- 40:52deliberately increased the difficulty level of liking subscribing or leaving a review
- 40:57of the podcast. So I don't actually think you'll be able to do any of those things.
- 41:02Or am I just using reverse psychology or maybe double reverse psychology? Is anything peel?
- 41:11Do any of us exist beyond this current moment? Okay, we're all done. Open your eyes.